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Method and apparatus for servicing a pressurized system

a technology for pressurizing systems and equipment, applied in lighting and heating equipment, container discharge methods, cleaning methods using liquids, etc., can solve problems such as moisture and other contaminants entering the system, system performance can deteriorate, and the system can be easily damaged, so as to prevent or reduce refrigerant loss and injury, facilitate access, and increase the stability and grip of the member

Inactive Publication Date: 2005-05-12
PRIME SOLUTIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a purge fitting for venting a pressurized system, such as a climate control system, a brake system, or a hydraulic system. The purge fitting allows air that may be trapped in the system to be vented by depressing a purge actuator. The purge actuator can be a pusher or a valve that opens a valve. The purge fitting can be incorporated into a coupling member or a service device for servicing the system. The invention features a compact purge fitting that can be easily installed and a service port detection member that opens the valve when engaged with the system. The purge fitting can be used in various systems and is designed to minimize the amount of air introduced into the system during servicing."

Problems solved by technology

In air conditioning systems, for example, system performance can deteriorate when air is in the system.
In addition, introduction of air can also lead to introduction of moisture and other contaminants into the system.

Method used

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  • Method and apparatus for servicing a pressurized system
  • Method and apparatus for servicing a pressurized system
  • Method and apparatus for servicing a pressurized system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Referring to FIGS. 1-3, 5, and 6, coupling member 2 includes body 4. Body 4 has first end 6 attached to release sleeve assembly 8. Release sleeve assembly 8 includes adapter 10 which is attached by threads to first end 6. Alternatively, adapter 10 can be attached to first end 6 by pins, set screws, a snap ring, brazing, soldering, or swaging. O-ring 11 provides a fluid-tight seal between adapter 10 and body 4. Release sleeve 12 slides over adapter 10. Retaining ring 14 holds release sleeve 12 over adapter 10. Release sleeve spring 16 resides between release sleeve 12 and adapter 10 and pushes release sleeve 12 against retaining ring 14. When pushed against retaining ring 14, release sleeve 12 holds balls 18 within adapter 10. Balls 18 are distributed around the circumference of adapter 10. First end 6 includes orifice 20, which can receive a service port, which includes a valve, of a pressurized system. Balls 18 engage with the service port when the port is inserted into orif...

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PUM

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Abstract

A method and apparatus for servicing a pressurized system is described. A purge fitting can be used to vent the pressurized system. Venting can release a gas, such as air, from the system. The pressurized system can be a climate control system (e.g., an air conditioning or refrigeration system), a brake system, a hydraulic system, or a service device for servicing a climate control system. The purge fitting allows air that may be trapped in the pressurized system to be vented by depressing a purge actuator, such as a purge button attached to the fitting. The air can be vented from an opening adjacent to the actuator or other orifice. By purging air directly from the system, the amount of air introduced into the system during servicing can be minimized. The invention also features a coupling member that can be compact in size. The coupling member can include a self-sealing valve assembly that prevents opening the coupling member until a proper coupling interconnection with a system to be serviced has taken place. The purge fitting can be incorporated in the coupling member or other service device.

Description

CLAIM OF PRIORITY [0001] This application is a continuation of and claims priority to U.S. application Ser. No. 09 / 422,236 filed on Oct. 21, 1999, now U.S. Pat. No. 6,539,970, the entire contents of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION [0002] The present invention relates to a method and apparatus for servicing a pressurized system, in particular an air conditioning or refrigeration system. [0003] Servicing couplings are commonly employed to facilitate charging and evacuation of a pressurized fluid system, such as a refrigeration system, an air conditioning system, or a hydraulic system. The service coupling connects to a service port of the system. The service coupling opens a service port of a system, allowing fluids, including liquids or gases, to be exchanged with the system. A quick-release interconnection between the service port and the service adapter can facilitate the servicing process. For example, when servicing a refrigeration or air con...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B08B9/02F16L37/23F16L37/36F25B41/00F25B45/00
CPCB08B9/0321F16L37/23F25B2345/006F25B41/003F25B45/00F16L37/36Y10T137/4245Y10T137/87925Y10T137/0318Y10T137/87981Y10T137/0419Y10T137/88046Y10T137/87088Y10T137/87096
Inventor KNOWLES, STEVEN M.KALLEY, TERRENCE D.
Owner PRIME SOLUTIONS LLC
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